Folding stool



FIG. 1 is a front view of a folding stool showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view of a folding stool showing my new design;

FIG. 8 is another perspective view thereof;

FIG. 9 is a perspective view showing that the folding stool is in a folded status; and,

FIG. 10 is a perspective view showing that the folding stool is in another folded status.

The broken lines in the figures are for the purposes of illustrating portions of the folding stool, which form no part of the claimed design. 

CLAIM The ornamental design for a folding stool, as shown and described. 